function getQueStr(url, ref) //获取参数值

 {

     var str = url.substr(url.indexOf('?') + 1);

     if (str.indexOf('&') != -1) {

         var arr = str.split('&');

         for (i in arr) {

             if (arr[i].split('=')[0] == ref)

                 return arr[i].split('=')[1];

         }

     }

     else {

         return url.substr(url.indexOf('=') + 1)

     }

 }

 function setQueStr(url, ref, value) //设置参数值

 {

     var str = "";

     if (url.indexOf('?') != -1)

         str = url.substr(url.indexOf('?') + 1);

     else

         return url + "?" + ref + "=" + value;

     var returnurl = "";

     var setparam = "";

     var arr;

     var modify = "0";

     if (str.indexOf('&') != -1) {

         arr = str.split('&');

         for (i in arr) {

             if (arr[i].split('=')[0] == ref) {

                 setparam = value;

                 modify = "1";

             }

             else {

                 setparam = arr[i].split('=')[1];

             }

             returnurl = returnurl + arr[i].split('=')[0] + "=" + setparam + "&";

         }

         returnurl = returnurl.substr(0, returnurl.length - 1);

         if (modify == "0")

             if (returnurl == str)

                 returnurl = returnurl + "&" + ref + "=" + value;

     }

     else {

         if (str.indexOf('=') != -1) {

             arr = str.split('=');

             if (arr[0] == ref) {

                 setparam = value;

                 modify = "1";

             }

             else {

                 setparam = arr[1];

             }

             returnurl = arr[0] + "=" + setparam;

             if (modify == "0")

                 if (returnurl == str)

                     returnurl = returnurl + "&" + ref + "=" + value;

         }

         else

             returnurl = ref + "=" + value;

     }

     return url.substr(0, url.indexOf('?')) + "?" + returnurl;

 }

 function delQueStr(url, ref) //删除指定参数值

 {

     var str = "";

     if (url.indexOf('?') != -1)

         str = url.substr(url.indexOf('?') + 1);

     else

         return url;

     var arr = "";

     var returnurl = "";

     var setparam = "";

     if (str.indexOf('&') != -1) {

         arr = str.split('&');

         for (i in arr) {

             if (arr[i].split('=')[0] != ref) {

                 returnurl = returnurl + arr[i].split('=')[0] + "=" + arr[i].split('=')[1] + "&";

             }

         }

         return url.substr(0, url.indexOf('?')) + "?" + returnurl.substr(0, returnurl.length - 1);

     }

     else {

         arr = str.split('=');

         if (arr[0] == ref)

             return url.substr(0, url.indexOf('?'));

         else

             return url;

     }

 }

 var str = window.location.href.replace(/(\?|#)[^"]*/g, '');//删除所有参数值